<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Title</title>
</head>
<body>
<p style="color: red;">${msg}</p>
<form action="/3">
    <label for="username">用户名：</label>
    <input name="username" id="username" type="text">
    <label for="password">密码：</label>
    <input name="password" id="password" type="password">
    <input type="submit" value="提交">
</form>
</body>
</html>
